-68.44% is the change from 979 to 309
Calculation steps:
[( 309 - 979 ) ÷ 979] x 100 = -68.44%
Formula
Percentage change = [(309 - 979) / 979] x 100
Subtract the new number by the original number
309 - 979 = -670
-670 ÷ 979 = -0.6843718079673136
-0.6843718079673136 x 100 = -68.44%